Hi Rick, Pay close attention to the filter bandwidth you have dialed in, and make sure that BOTH the main receiver and sub-receiver are using filters of the SAME bandwidth (with offset adjusted if they are not 8-pole filters). For example, if your main RX has a 2.8 KHz filter installed and you are listening within that bandwidth, be sure that your sub-RX is ALSO using a 2.8 KHz filter. If not, you'll experience the frequency shift. I don't claim to know why; only that I've observed that behavior here with the new Synths. This shift did not occur with the original Synth cards. I don't consider it to be a problem; it just means that I need to get another filter for the sub-receiver so that the filter complement of the sub-RX matches that of the main RX, (which is supposed to be the case when using diversity reception anyway).
If you have a bandwidth where you know that both the main RX and sub-RX are using the SAME filter bandwidth, use that bandwidth and see if the issue still occurs. If it does, then the issue is being caused by something other than what I mentioned above. 73, Dale WA8SRA > Hi all > > I have a very odd thing happening in diversity mode after installing the > new > VFO's. I have a K3 with dual receivers and new VFOs using a dipole and > loop > antenna when in diversity. I also have a P3. I am on current 5.29 > firmware > and have successfully gone through all required calibration steps after > upgrading the VFO. > > Scenario follows ... > > I am listening to WWV 10 MHz in USB mode. > > When I am in Split, not Diversity, WWV zero beats at exactly 10.000 MHz. > The P3 green band denoting the K3's passband is nicely lined up with the > upper sideband of WWV. > > When I am in Diversity mode, however, WWV zero beats at exactly 9.9985 > MHz. > On the P3 I clearly see the WWV signal at 10.000 MHz while the green band > denoting the K3's frequency is just as clearly 1.5 kHz lower. > > I can't figure out what is causing this -1.5 kHz shift! > > I have had my K3 for some time so I feel I am reasonably competent with it > :) but this has me stumped. > > I have asked K3 Support about this but I thought someone out there might > have seen and dealt this this already. > > 73 > Rick AG6AY > K3 5706 > P3 1835 > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/K3-Odd-freq-shift-in-diversity-mode-after-VFO-upgrade-tp7604845.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to d...@lightstream.net > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
